Rapid postharvest browning of litchi fruit pericarp is the result of polyphenol oxidase activity (Underhill and Critchley, , Jiang and Fu, , Jiang, , . Pericarp browning is the major post-harvest problem of litchi (Litchi chinensisSonn) fruit, resulting in reduced commercial value of the fruit. Mature lychee (Litchi chinensis Sonn.) fruit were heat-treated at 60C for 10 min to study heat-induced pericarp browning. Polyphenol oxidase (EC ).
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Peng L, Jiang Y. Color stability of strawberry and blackcurrant syrups. Bulletin Soc Royal Sci.
In this experiment, anthocyanin content of litchi fruit pericarp decreased with storage time Fig. Support Center Support Center. Enhanced effect of Lcysteine and citric acid combination on browning inhibition and quality maintenance in harvested litchi fruit.
Therefore, there is an urgent need to find out an alternative postharvest tool that are safe for consumption, ecofriendly and economically viable to over come litchi pericarp browning and maintaining the overall fruit quality.
Role of salicylic acid in plants. In banana decreased level of all these enzymes was reported with the application of salicylic acid in a concentration depending manner during the process of ripening Srivastava and Dwivedi Effect of antioxidants and salicylic acid on browning index, decay percentage, PPO activity, relative leakage rate and anthocyanin conc.
Delayed ripening of banana fruit by salicylic acid. The polyphenol oxidase activity can be decreased by the use of N -acetyl cysteine ACbrowniing acid IAA than commonly used antioxidants like citric acid and glutathione or its combinations Lei et al.
Control of post-harvest pericarp browning of litchi (Litchi chinensis Sonn)
The treated fruits were packed in transparent perforated 0. Effect of post harvest treatments on shelf life and quality of litchi fruit stored under modified atmosphere at low temperature.
Pericarp browning is the major post-harvest problem of litchi Litchi chinensis Sonn fruit, resulting in reduced commercial value of the fruit. Electrolyte leakage was determined with a conductivity meter. The changes of pigments, phenolics contents and activities of polyphenol oxidase and phenylalanine ammonia-lyase in pericarp of postharvest litchi fruit.
The changes of pigments, phenolic contents and activities of polyphenol oxidase and phenylalanine ammonia-lyase in pericarp of post-harvest litchi fruits.
On the basis of number of spoiled fruits unfit for human consumption observed at every one day interval, the percentage spoilage was worked out and the spoilt fruits were removed. Polyphenol oxidase in plants-recent litcni.
A comparison of the pulmonary effect of 0. Fruits dipped in tap water served as control.
Open in a separate window. J Ltichi Sci Technol. But during combined application, the effective concentration of these compounds may vary, which requires further research in this field. In this present study salicylic acid treatments proved best over other treatments. Effect of pre- and postharvest salicylic acid treatment on ethylene production, fungal decay and overall quality of Selva strawberry fruit.
Total soluble solid TSS and titratable acidity concentrations of litchi fruits were analyzed every day starting from first day harvesting date to sixth day of storage. ABA effect on ethylene production, PAL activity, anthocyanin and phenolic contents of strawberry fruit. The fruits treated with salicylic acid had higher concentration of total soluble solid, titratable acidity and lower rate of physiological loss in weight. Akamine EK Preventing the darkening of fresh lychees prepared for transport.
The authors are also thankful to Dr.
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Postharvest retention of the red colour of litchi fruit pericarp. It was found that 0. Effect on total soluble solid, titratable acidity, ascorbic acid content, TSS: Anthocyanin degradation index and polymeric colour increased during storage. Abstract Pericarp browning is the major post-harvest problem of litchi Litchi chinensis Sonn fruit, resulting in reduced commercial value of the fruit.
We were trying to find out most effective compound which can reduce these problems.